三年级数学下册三《乘法》电影院精炼2北师大版.doc

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1电影院1哪把钥匙能开智慧门?2(19+32)24 25816 4861259004122 18+3250 6420321 3早期家用电脑的键盘上只有 86 个键,王珊和同学们收集了 25 个这样的旧键盘,一共可回收多少个键?4你写一篇作文有多少字?想一想,怎样能很快地估算出大约写了多少字?需要的数据:算式: 5爸爸、妈妈、爷爷、奶奶、姥姥、姥爷和小明一起去参观植物园。买门票要多少元钱? 6方方每分大约行 63 米,从家到学校要走 28 分;王老师平均每分大约行 76 米,从家到2学校要走 24 分。(1)方方和王老师,谁家离学校远,远多少米?(2)方方家在学校的北面,王老师家在学校的南面,方方和王老师家相距多少米?影院(2)5255+15=140(元) 6(1)方方:6328=1764(米) 王老师:7624=1824(米) 1824-1764=60(米)(2)1824+1764=3588(米)

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